User's Manual

RTM Elster AMCO applicative PFS Coronis Systems
Datalogging table structure for two Ports (A & B) connected:
RTC value on
last logged
readings on
each Port
Last logged
reading on Port A
Log 0
...
Port A
Log (m-2)
Port A
Log (m-1)
Last logged
reading on Port B
Log 0
...
Port B
Log (m-2)
Port B
Log (m-1)
7 bytes 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes
2100 logged readings maximum whatever the number of Ports connected
m= 1050 readings max.
Depending on the number of Ports configured, RTM Elster AMCO knows exactly where to store each Port
readings, and so, where to recover them. This is done thanks to a pointer on the table and dynamic offsets,
depending on the number of Ports configured in the RTM Elster AMCO.
ATTENTION :
Only the last logged reading is time stamped. It is necessary to know the datalogging configuration to
compute others logged reading time stamps. That's why RTM Elster AMCO sends back datalogging
configuration every time a request to return logged reading is addressed to it.
5.2.1.Datalogging parameters access
The table below gives the list of parameters used for datalogging initialization.
N° Description
Size
in
bytes
Access
Right
(Pulse
Profile)
Access
Right
(encoder
Profile)
Default value
(Hexa)
Restriction on
parameters
Datalogging feature parameters
0x07
Reading Sampling Period 1 R/W R/W
0x0B
-
0x08
Sampling activation type 1 R/W R/W
0x01 0x01 only
0x10
Measurement Period (datalogging in time steps)
expressed in multiple of “Reading Sampling Period”
1 R/W R/W
0x01
-
0x12
Day of the week, or of the month (datalogging) 1 R/W R/W
0x01
Conform day needed
0x13
Hour of measurement
(datalogging once a week, or once a month)
1 R/W R/W
0x08
Conform hour needed
0x14
number of records in the datalogging table
(all ports records cumulated)
2 R R
0x0000
Read only
EVO RTM-UserMan 24